2016年7月20日美國聯邦公報發(fā)布通告，豁免一種農藥助劑的最大殘留限量。

　　該種農藥助劑為2-丙烯酸，丁酯，乙酸乙烯酯鈉鹽聚合物（2-propenoic acid, butyl ester, polymer with ethenyl acetate and sodium ethenesulfonate）。本次申請由Celanese Ltd 公司提交。美國環(huán)保署經評估，認為沒必要制定食品與飼料中有關的限量。

　　部分原文報道如下：

　　This regulation establishes an exemption from the requirement of a tolerance for residues of 2-propenoic acid, butyl ester, polymer with ethenyl acetate and sodium ethenesulfonate （CAS Reg. No. 66573-43-1） when used as an inert ingredient in a pesticide chemical formulation. Celanese Ltd submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act （FFDCA）， requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of 2-propenoic acid, butyl ester, polymer with ethenyl acetate and sodium ethenesulfonate on food or feed commodities.

　　原文鏈接：https://www.federalregister.gov/articles/2016/07/20/2016-17165/2-propenoic-acid-butyl-ester-polymer-with-ethenyl-acetate-and-sodium-ethenesulfonate-tolerance